UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                  SCHEDULE 13G

                                Amendment No. 3

                  Under the Securities and Exchange Act of 1934

                          The Boston Beer Company, Inc.
                                (Name of Issuer)

                              Class A Common Stock
                         (Title of Class of Securities)

                                   100557107
                                 (CUSIP Number)

    Check the following box if a fee is being paid with this statement |_|.

(A fee is not required only if the filing person:  (1) has a previous statement 
on file reporting  beneficial  ownership  of more  than  five  percent  of the  
class of securities described in Item 1; and (2) has filed no amendment 
subsequent thereto reporting  beneficial  ownership of five percent or less of 
such class.) (See Rule 13d-7).

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


<PAGE>


1             NAME OF REPORTING PERSON
              S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              Mr. C. James Koch

2             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a) |_|
                                                                     (b) |X|

3             SEC USE ONLY


4             CITIZENSHIP OR PLACE OF ORGANIZATION

              U.S.A.

Number        5          SOLE VOTING POWER
of shares
benefic-                 4,839,456
ially
owned
by each
reporting
person
with
              6          SHARED VOTING POWER

                         0

              7          SOLE DISPOSITIVE POWER

                         4,839,456

              8          SHARED DISPOSITIVE POWER

                         0

9             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              4,839,456

10            CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN 
              SHARES        X


11            PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

              23.6%

12            TYPE OF REPORTING PERSON

                IN


<PAGE>

Item 1(a)         Name of Issuer:

                  The Boston Beer Company, Inc.

Item 1(b) Address of Issuer's principal executive offices:

                  75 Arlington Street
                  Boston, MA   02116

Item 2(a)         Name of person filing:

                  C.James Koch

Item 2(b) Address of principal business office or, if none, residence:

                  75 Arlington Street
                  Boston, MA   02116

Item 2(c)         Citizenship:

                  U.S.A.

Item 2(d)         Title of class of securities:

                  Class A Common Stock

Item 2(e)         CUSIP Number:

                  100557107

Item 3            If Statement filed pursuant to Rule 13d-1(b) or 13d-2(b), 
                  check whether the person filing is a:


                  (a)      |_| Broker or Dealer

                  (b)      |_| Bank

                  (c)      |_| Insurance Company

                  (d)      |_| Investment Company

                  (e)      |_| Investment Advisor

                  (f)      |_| Employee Benefit Plan, Pension Fund or Endowment 
                               Fund

<PAGE>


                  (g)      |_| Parent Holding Company

                  (h)      |_| Group

                                 NOT APPLICABLE
Item 4            Ownership:

                  (a)      Amounts beneficially owned:

                           As of December 31, 1998, Mr. Koch owned directly
                           726,367 shares of the Issuer's Class A Common Stock
                           and had the right to acquire directly (i) 4,107,355
                           shares of the Issuer's Class A Common Stock upon the
                           conversion of an equal number of shares of the 
                           Issuer's Class A Common Stock held by Mr. Koch and 
                           (ii) 5,734 shares of the Issuer's Class A Common 
                           Stock upon the exercise of vested stock options.

                           In addition, Mr. Koch may be deemed to beneficially
                           own 1,472 shares of the Issuer's Class A Common
                           Stock owned by his spouse, 332,835 shares of the 
                           Issuer's Class A Common Stock held by a trust in 
                           which his children have a pecuniary interest, and 
                           281,718 shares of the Issuer's Class A Common Stock 
                           held by by a trust in which he he has a pecuniary
                           interest.  Mr. Koch disclaims such beneficial 
                           ownership.

                  (b)      Percent of class:

                           Mr. Koch beneficially owns 23.6% of the Issuer's
                           Class A Common Stock.   In addition, Mr. Koch could
                           be deemed to be a benficial owner, for purposes of
                           this Schedule 13G, of an additional 616,025 shares
                           of Class A Common Stock of the Issuer as described
                           in item 4(a) above.  Beneficial ownership of such
                           shares would constitute beneficial ownership of an
                           additional 3.0% of the Issuer's Class A Common
                           Stock.

                  (c) Number of shares as to which such person has:

                     (i)   sole power to vote or to direct the vote:  4,839,456

                    (ii)   shared power to vote or to direct the vote: 0

                   (iii)   sole power to dispose or to direct the disposition 
                           of: 4,839,456

                    (iv)   shared power to dispose or to direct the disposition 
                           of:  0

Item 5            Ownership of 5% or Less of a Class:

                  Not applicable

Item 6            Ownership of more than 5% on behalf of another person:


                  Not applicable.

Item 7            Identification and classification of the subsidiary which 
                  acquired the security being reported on by the Parent Holding 
                  Company:
                  
                  Not applicable.


<PAGE>


      
Item 8            Identification and classification of members of the Group:


                  Not applicable.

Item 9            Notice of Dissolution of Group:

                  Not applicable.

Item 10           Certification:

                  Not applicable.



<PAGE>



                                
                                    SIGNATURE


         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.




Dated:  February 11, 1999                         /s/C. James Koch
                                                  C. James Koch